Last month, NASA's perseverance rover touched down on the surface of Mars, making it the latest human-made object to call the red planet home. As of now, there are over 10 tons of human-made objects on Mars, with more missions planned for later in the decade. We look at the line between exploration and colonization. Joining us are Dr. Alice Gorman, AKA Dr. Space Junk, an archaeologist and who looks at spacecraft and off-earth landing sites the way others look at clay pots and cave art; and Chris Schaberg, an English professor at Loyola University New Orleans specializing in the environmental humanities, who recently wrote an article called, "We're Already Colonizing Mars."
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